EP1299605B1 - Frequency converter for an immersion vibrator - Google Patents

Frequency converter for an immersion vibrator Download PDF

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Publication number
EP1299605B1
EP1299605B1 EP01945340A EP01945340A EP1299605B1 EP 1299605 B1 EP1299605 B1 EP 1299605B1 EP 01945340 A EP01945340 A EP 01945340A EP 01945340 A EP01945340 A EP 01945340A EP 1299605 B1 EP1299605 B1 EP 1299605B1
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EP
European Patent Office
Prior art keywords
converter
frequency converter
housing
voltage
frequency
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP01945340A
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German (de)
French (fr)
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EP1299605A2 (en
Inventor
Michael Steffen
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Wacker Construction Equipment AG
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Wacker Construction Equipment AG
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Publication of EP1299605A2 publication Critical patent/EP1299605A2/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/08—Internal vibrators, e.g. needle vibrators

Definitions

  • the invention relates according to the preamble of claim 1 a frequency converter for an internal vibrator.
  • Internal vibrators are used to compact still liquid concrete.
  • a belonging to the internal vibrator vibrating bottle is immersed in the concrete, in which an electric motor and driven by this at high speed unbalance are housed.
  • the motor To achieve the required motor speed and thus the compression frequency, the motor must be supplied with a special voltage whose frequency (eg 200 Hz) is above the mains frequency provided by the public grid.
  • the special voltage is provided by a special voltage network or by a frequency converter, which is provided either on site in the form of a larger stationary unit or as an integral part of the internal vibrator.
  • An internal vibrator with integrated frequency converter is from the DE G 92 17 854.5 known.
  • the invention has for its object to provide a frequency converter, which also makes it possible for internal vibrators without their own integrated frequency converter, if desired, to take advantage of internal vibrators with its own frequency converter.
  • a frequency converter according to the invention has a mobile converter housing with a converter circuit and is characterized in that a socket supplied by the converter circuit with the special voltage is provided on which a plug part of the internal vibrator can be inserted.
  • a known, not own frequency converter having internal vibrator with its serving as a plug-in power plug plugged into the socket of the frequency converter, wherein the socket can be integrated into the converter housing or connected via a further supply line to the converter housing.
  • An advantageous embodiment of the invention is characterized in that the socket is fed alternatively to the special voltage with mains voltage and that a switch is provided for switching between special and network voltage.
  • the internal vibrator can also - as before - be connected to a special voltage network without the frequency converter would have to be reduced by him. This has the advantage that the frequency converter can not be lost in busy construction site operation.
  • a securing device is provided in the region of the socket, with which the plug part of the internal vibrator is held in the socket.
  • the safety device thus serves as a train protection and allows the operator to drag the frequency converter on the internal vibrator behind him.
  • this has the converter housing on an elongated outer shape with minimized transverse dimensions, which greatly facilitates the hatchability of the converter housing on the usually provided with numerous reinforcing iron construction site.
  • a smooth outer skin of the converter housing further improves the mobile handling of the frequency converter.
  • FIGURE shows a frequency converter according to the invention with connected internal vibrator.
  • An internal vibrator 1 known per se has a vibrating bottle 2, in which an elongate electric motor and an unbalance driven by the electric motor are accommodated.
  • the vibrating bottle 2 is connected to a switch housing 4 via a protective hose 3 that is up to several meters long.
  • the protective tube 3 also serves as a service hose, with which the vibrating bottle 2 is dammed by the operator in the concrete to be compacted.
  • a switch 5 is arranged, with which the electric motor in the vibrating bottle 2 can be switched on and off. From the switch housing 4, an electrical lead 6 is led out, which opens into a power plug 7.
  • known per se internal vibrator 1 is connected to the power plug 7 in a present at the site special voltage network or a stationary frequency converter.
  • a frequency converter 8 is provided in which the mains plug 7 is inserted.
  • the frequency converter 8 has a converter housing 9, in which a known electronic converter circuit is housed. Furthermore, an additional switch may be provided, with which the power supply can be interrupted.
  • a supply line 10 is led to a power plug 11.
  • the power plug 11 can be plugged into a conventional, existing on the site public network.
  • a socket 12 is integrated in the converter housing 9, in which the plug 7 of the internal vibrator 1 can be inserted.
  • the frequency converter 8 receives via the power plug 11 usual mains voltage (230 V or 400 V, 50 Hz), which is guided via the supply line 10 to the converter circuit in the converter housing 9. There, the mains voltage is converted to a special voltage, the z. B. 42 V can be 200 Hz. The special voltage is applied to the socket 12, where it can get over the power plug 7 in the internal vibrator 1.
  • mains voltage 230 V or 400 V, 50 Hz
  • the socket 12 it is also possible to arrange the socket 12 away from the converter housing 9 and to connect it to the converter housing 9 by means of an additional supply line.
  • the converter housing 9 has an elongated, slender outer shape with minimized transverse dimensions and a smooth outer skin in order to be able to be pulled through concrete reinforcements without resistance. Slanted end walls 13 on the converter housing 9 still support the hatchability.
  • the frequency converter 8 can be particularly easy to handle mobile. The handling is still supported if the converter housing 9 carries no handle that could affect the hatchability.
  • another embodiment of the invention makes it possible that the socket 12 can be fed not only with the special voltage, but optionally also with mains voltage.
  • a changeover switch for switching between special and mains voltage is provided on the converter housing 9. While the current for generating the special voltage is passed through the converter circuit, it is performed after actuation of the switch directly from the supply line 10 to the socket 12, that is only passed through the frequency converter 8. This makes it possible, at least for a short time, to connect the combination of internal vibrator 1 and frequency converter 8 to existing special voltage networks without the internal vibrator 1 having to be disconnected from the frequency converter 8.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Dc-Dc Converters (AREA)

Description

Die Erfindung betrifft gemäß dem Oberbegriff von Patentanspruch 1 einen Frequenzumformer für einen Innenrüttler.The invention relates according to the preamble of claim 1 a frequency converter for an internal vibrator.

Innenrüttler werden zur Verdichtung von noch flüssigem Beton verwendet. Dazu wird in den Beton eine zu dem Innenrüttler gehörende Rüttelflasche eingetaucht, in der ein Elektromotor und eine von diesem mit hoher Drehzahl angetriebene Unwucht untergebracht sind. Zur Erreichung der erforderlichen Motordrehzahl und damit Verdichtungsfrequenz muss der Motor mit einer Sonderspannung versorgt werden, deren Frequenz (z. B. 200 Hz) über der vom öffentlichen Netz bereitgestellten Netzfrequenz liegt.Internal vibrators are used to compact still liquid concrete. For this purpose, a belonging to the internal vibrator vibrating bottle is immersed in the concrete, in which an electric motor and driven by this at high speed unbalance are housed. To achieve the required motor speed and thus the compression frequency, the motor must be supplied with a special voltage whose frequency (eg 200 Hz) is above the mains frequency provided by the public grid.

Es ist bekannt, dass die Sonderspannung durch ein Sonderspannungsnetz oder durch einen Frequenzumformer bereitgestellt wird, der entweder auf der Baustelle in Form einer größeren stationären Einheit oder als integrierter Bestandteil des Innenrüttlers vorgesehen ist. Ein Innenrüttler mit integriertem Frequenzumformer ist aus der DE G 92 17 854.5 bekannt.It is known that the special voltage is provided by a special voltage network or by a frequency converter, which is provided either on site in the form of a larger stationary unit or as an integral part of the internal vibrator. An internal vibrator with integrated frequency converter is from the DE G 92 17 854.5 known.

In der den Oberbegriff von Patentanspruch 1 bildenden CH 689598 A5 (= EP 0 964 116A ) ist ein Innenrüttler beschrieben, bei dem ein Umformer von einem eine Rüttelflasche tragenden Schutzschlauch abtrennbar ist. Die Kopplung des Schutzschlauchs mit dem Umformer erfolgt über eine speziell ausgestaltete elektromechanische Stecker-Buchsenkonstruktion, so dass nicht nur die Sonderspannung übertragbar ist, sondern eine mechanisch feste Verbindung zwischen Schutzschlauch und Umformergehäuse gewährleistet ist. Die spezielle Ausgestaltung der elektromechanischen Kopplung bedingt, dass die zu koppelnden Elemente genau aufeinander abgestimmt sein müssen. Eine Nutzung von Bauelementen, die nicht für die spezielle Kopplung ausgerüstet sind, ist nicht möglich.In the preamble of claim 1 forming CH 689598 A5 (= EP 0 964 116A ) an internal vibrator is described, in which a converter can be separated from a protective tube carrying a vibrating bottle. The coupling of the protective tube with the converter via a specially designed electromechanical plug-socket design, so that not only the special voltage is transferable, but a mechanically strong connection between the protective tube and converter housing is guaranteed. The special design of the electromechanical coupling requires that the elements to be coupled must be matched exactly. It is not possible to use components that are not equipped for the specific coupling.

Innenrüttler mit integriertem Frequenzumformer haben sich in der Praxis hervorragend bewährt. Nach wie vor jedoch werden auf Baustellen auch Innenrüttler eingesetzt, die keinen eigenen Frequenzumformer aufweisen und durch einen externen Frequenzumformer gespeist werden müssen. Diese Innenrüttler zeichnen sich vor allem durch ihre geringeren Einstandskosten aus. Allerdings setzen sie auf Baustellen entweder ein entsprechendes Sonderspannungsnetz mit niedrigem Spannungswert und hoher Spannungsfrequenz voraus, oder einen üblichen Frequenzumformer, der in Form eines sehr schweren Kastens an der Arbeitsstelle zur Verfügung gestellt werden muss. Die Bedienung eines derartigen Innenrüttlers wird dadurch sehr unhandlich.Internal vibrators with integrated frequency converter have proven themselves in practice outstanding. However, still on construction sites and internal vibrators are used, which do not have their own frequency converter and must be powered by an external frequency converter. These internal vibrators are characterized mainly by their lower purchase costs. However, on construction sites they either use an appropriate special voltage network with a low voltage value and high voltage frequency, or a conventional frequency converter, which must be provided in the form of a very heavy box at the workplace. The operation of such an internal vibrator is very unwieldy.

Der Erfindung liegt die Aufgabe zugrunde, einen Frequenzumformer anzugeben, der es auch für Innenrüttler ohne eigenen integrierten Frequenzumformer ermöglicht, auf Wunsch die Vorteile von Innenrüttlern mit eigenem Frequenzumformer zu nutzen.The invention has for its object to provide a frequency converter, which also makes it possible for internal vibrators without their own integrated frequency converter, if desired, to take advantage of internal vibrators with its own frequency converter.

Die Lösung der Aufgabe wird erfindungsgemäß durch einen Frequenzumformer gemäß Patentanspruch 1 gelöst. Vorteilhafte Weiterentwicklungen der Erfindung sind den abhängigen Ansprüchen zu entnehmen.The solution of the problem is achieved by a frequency converter according to claim 1. Advantageous developments of the invention can be found in the dependent claims.

Ein erfindungsgemäßer Frequenzumformer weist ein mobiles Umformergehäuse mit einer Umformerschaltung auf und ist dadurch gekennzeichnet, dass eine von der Umformerschaltung mit der Sonderspannung gespeiste Steckbuchse vorgesehen ist, an der ein Steckerteil des Innenrüttlers einsteckbar ist. Somit ist es erfindungsgemäß möglich, einen bekannten, keinen eigenen Frequenzumformer aufweisenden Innenrüttler mit seinem als Steckerteil dienenden Netzstecker in die Steckbuchse des Frequenzumformers einzustecken, wobei die Steckbuchse in das Umformergehäuse integriert oder über eine weitere Zuleitung mit dem Umformergehäuse verbunden sein kann. Ohne dass besondere Mehrkosten entstehen, und ohne dass ein besonderer baulicher Aufwand betrieben werden muss, lässt sich damit ein Innenrüttler ohne eigenen Frequenzumformer in einen Innenrüttler mit Frequenzumformer umrüsten.A frequency converter according to the invention has a mobile converter housing with a converter circuit and is characterized in that a socket supplied by the converter circuit with the special voltage is provided on which a plug part of the internal vibrator can be inserted. Thus, it is possible according to the invention, a known, not own frequency converter having internal vibrator with its serving as a plug-in power plug plugged into the socket of the frequency converter, wherein the socket can be integrated into the converter housing or connected via a further supply line to the converter housing. Without incurring any special additional costs, and without having to carry out any special construction work, it is possible to convert an internal vibrator without its own frequency converter into an internal vibrator with frequency converter.

Eine vorteilhafte Ausführungsform der Erfindung ist dadurch gekennzeichnet, dass die Steckbuchse alternativ zu der Sonderspannung mit Netzspannung speisbar ist und dass ein Umschalter zum Umschalten zwischen Sonder- und Netzspannung vorgesehen ist. Damit kann der Innenrüttler auch - wie bisher - an ein Sonderspannungsnetz angeschlossen werden, ohne dass der Frequenzumformer von ihm abgebaut werden müsste. Dies hat den Vorteil, dass der Frequenzumformer nicht im lebhaften Baustellenbetrieb verloren gehen kann.An advantageous embodiment of the invention is characterized in that the socket is fed alternatively to the special voltage with mains voltage and that a switch is provided for switching between special and network voltage. Thus, the internal vibrator can also - as before - be connected to a special voltage network without the frequency converter would have to be reduced by him. This has the advantage that the frequency converter can not be lost in busy construction site operation.

Bei einer weiteren vorteilhaften Ausführungsform der Erfindung ist im Bereich der Steckbuchse eine Sicherungseinrichtung vorgesehen, mit der das Steckerteil des Innenrüttlers in der Steckbuchse gehalten wird. Die Sicherungseinrichtung dient somit als Zugsicherung und ermöglicht es dem Bediener, den Frequenzumformer am Innenrüttler hinter sich herzuziehen. Vorteilhafterweise weist dazu das Umformergehäuse eine langgestreckte Außenform mit minimierten Querabmessungen auf, was die Schlupffähigkeit des Umformergehäuses auf der meist mit zahlreichen Armierungseisen versehenen Baustelle erheblich erleichtert. Durch eine glatte Aussenhaut des Umformergehäuses wird die mobile Handhabung des Frequenzumformers zusätzlich verbessert.In a further advantageous embodiment of the invention, a securing device is provided in the region of the socket, with which the plug part of the internal vibrator is held in the socket. The safety device thus serves as a train protection and allows the operator to drag the frequency converter on the internal vibrator behind him. Advantageously, this has the converter housing on an elongated outer shape with minimized transverse dimensions, which greatly facilitates the hatchability of the converter housing on the usually provided with numerous reinforcing iron construction site. A smooth outer skin of the converter housing further improves the mobile handling of the frequency converter.

Diese und weitere Vorteile und Merkmale der Erfindung werden nachfolgend anhand eines Beispiels unter Zuhilfenahme der begleitenden Figuren näher erläutert. Die einzige Figur zeigt einen erfindungsgemäßen Frequenzumformer mit angeschlossenem Innenrüttler.These and other advantages and features of the invention are explained in more detail below by way of example with the aid of the accompanying figures. The single FIGURE shows a frequency converter according to the invention with connected internal vibrator.

Ein an sich bekannter Innenrüttler 1 weist eine Rüttelflasche 2 auf, in der ein langgestreckter Elektromotor und eine von dem Elektromotor angetriebene Unwucht untergebracht sind. Die Rüttelflasche 2 ist über einen bis zu mehrere Meter langen Schutzschlauch 3 mit einem Schaltergehäuse 4 verbunden. Der Schutzschlauch 3 dient auch als Bedienungsschlauch, mit dem die Rüttelflasche 2 vom Bediener in den zu verdichtenden Beton eingetunkt wird. In dem Schaltergehäuse 4 ist ein Schalter 5 angeordnet, mit dem sich der Elektromotor in der Rüttelflasche 2 ein- und ausschalten lässt. Aus dem Schaltergehäuse 4 ist eine elektrische Zuleitung 6 herausgeführt, die in einen Netzstecker 7 mündet. Üblicherweise wird ein derartiger, an sich bekannter Innenrüttler 1 mit dem Netzstecker 7 in ein an der Baustelle vorhandenes Sonderspannungsnetz oder einen stationären Frequenzumformer angeschlossen.An internal vibrator 1 known per se has a vibrating bottle 2, in which an elongate electric motor and an unbalance driven by the electric motor are accommodated. The vibrating bottle 2 is connected to a switch housing 4 via a protective hose 3 that is up to several meters long. The protective tube 3 also serves as a service hose, with which the vibrating bottle 2 is dammed by the operator in the concrete to be compacted. In the switch housing 4, a switch 5 is arranged, with which the electric motor in the vibrating bottle 2 can be switched on and off. From the switch housing 4, an electrical lead 6 is led out, which opens into a power plug 7. Typically, such, known per se internal vibrator 1 is connected to the power plug 7 in a present at the site special voltage network or a stationary frequency converter.

Erfindungsgemäß wird aber ein Frequenzumformer 8 bereitgestellt, in den der Netzstecker 7 eingesteckt ist.According to the invention, however, a frequency converter 8 is provided in which the mains plug 7 is inserted.

Der Frequenzumformer 8 weist ein Umformergehäuse 9 auf, in dem eine an sich bekannte elektronische Umformerschaltung untergebracht ist. Weiterhin kann ein zusätzlicher Schalter vorgesehen sein, mit dem die Stromzufuhr unterbrochen werden kann.The frequency converter 8 has a converter housing 9, in which a known electronic converter circuit is housed. Furthermore, an additional switch may be provided, with which the power supply can be interrupted.

Aus dem Umformergehäuse 9 ist eine Zuleitung 10 zu einem Netzstecker 11 geführt. Der Netzstecker 11 lässt sich in ein übliches, auf der Baustelle vorhandenes öffentliches Netz einstecken.From the converter housing 9, a supply line 10 is led to a power plug 11. The power plug 11 can be plugged into a conventional, existing on the site public network.

Auf der dem Netzstecker 11 und der Zuleitung 10 abgewandten Seite des Umformergehäuses 9 ist in dem Umformergehäuse 9 eine Steckbuchse 12 integriert, in die sich der Netzstecker 7 des Innenrüttlers 1 einstecken lässt.On the side facing away from the power plug 11 and the supply line 10 of the converter housing 9, a socket 12 is integrated in the converter housing 9, in which the plug 7 of the internal vibrator 1 can be inserted.

Der Frequenzumformer 8 bezieht über den Netzstecker 11 übliche Netzspannung (230 V bzw. 400 V, 50 Hz), die über die Zuleitung 10 zur Umformerschaltung im Umformergehäuse 9 geführt wird. Dort wird die Netzspannung auf eine Sonderspannung umgeformt, die z. B. 42 V mit 200 Hz betragen kann. Die Sonderspannung wird an die Steckbuchse 12 angelegt, wo sie über den Netzstecker 7 in den Innenrüttler 1 gelangen kann.The frequency converter 8 receives via the power plug 11 usual mains voltage (230 V or 400 V, 50 Hz), which is guided via the supply line 10 to the converter circuit in the converter housing 9. There, the mains voltage is converted to a special voltage, the z. B. 42 V can be 200 Hz. The special voltage is applied to the socket 12, where it can get over the power plug 7 in the internal vibrator 1.

Alternativ zu der in der Figur gezeigten Ausführungsform ist es auch möglich, die Steckbuchse 12 abseits vom Umformergehäuse 9 anzuordnen und mittels einer zusätzlichen Zuleitung mit dem Umformergehäuse 9 zu verbinden.As an alternative to the embodiment shown in the figure, it is also possible to arrange the socket 12 away from the converter housing 9 and to connect it to the converter housing 9 by means of an additional supply line.

Besonders zweckmäßig ist es, wenn der Netzstecker 7 des Innenrüttlers 1 mit Hilfe einer vorzugsweisen mechanischen Sicherungseinrichtung in der Steckbuchse 12 gehalten wird. Damit ist es dem Bediener möglich, den Innenrüttler 1 zusammen mit dem Frequenzumformer 8 am Schutzschlauch 3 hinter sich herzuziehen, ohne dass die Verbindung zwischen Netzstecker 7 und Frequenzumformer 8 gelöst wird.It is particularly useful if the power plug 7 of the internal vibrator 1 is held by means of a preferred mechanical securing device in the socket 12. Thus, it is possible for the operator to drag the internal vibrator 1 together with the frequency converter 8 on the protective tube 3 behind him, without the connection between the power plug 7 and frequency converter 8 is released.

Das Umformergehäuse 9 weist eine langgestreckte, schlanke Außenform mit minimierten Querabmessungen und glatter Außenhaut auf, um möglichst widerstandslos durch Betonarmierungen gezogen werden zu können. Schrägstehende Stirnwände 13 am Umformergehäuse 9 unterstützen die Schlupffähigkeit noch.The converter housing 9 has an elongated, slender outer shape with minimized transverse dimensions and a smooth outer skin in order to be able to be pulled through concrete reinforcements without resistance. Slanted end walls 13 on the converter housing 9 still support the hatchability.

Durch den elektronischen Aufbau der Umformerschaltung und die schlanke Form des Umformergehäuses lässt sich der Frequenzumformer 8 besonders leicht mobil handhaben. Die Handhabbarkeit wird noch unterstützt, wenn das Umformergehäuse 9 keinen Handgriff trägt, der die Schlupffähigkeit beeinträchtigen könnte.Due to the electronic structure of the converter circuit and the slim shape of the converter housing, the frequency converter 8 can be particularly easy to handle mobile. The handling is still supported if the converter housing 9 carries no handle that could affect the hatchability.

Dadurch, dass der Frequenzumformer 8 zusammen mit dem Innenrüttler 1 eine kompakte Einheit bildet und vom Bediener leicht bewegt werden kann, eröffnen sich auch konventionellen Innenrüttlern ohne integriertem Frequenzumformer die Bedienungsvorteile, die bisher nur Innenrüttlern mit integriertem Frequenzumformer vorbehalten waren.The fact that the frequency converter 8 together with the internal vibrator 1 forms a compact unit and can be easily moved by the operator, also open conventional vibrators without integrated frequency converter operating advantages, which were previously reserved only internal vibrators with integrated frequency converter.

Eine in der Figur nicht dargestellte andere Ausführungsform der Erfindung ermöglicht es, dass die Steckbuchse 12 nicht nur mit der Sonderspannung, sondern wahlweise auch mit Netzspannung gespeist werden kann. Dazu ist am Umformergehäuse 9 ein Umschalter zum Umschalten zwischen Sonder- und Netzspannung vorgesehen. Während der Strom zum Erzeugen der Sonderspannung über die Umformerschaltung geführt wird, wird er nach Betätigen des Umschalters direkt von der Zuleitung 10 zur Steckbuchse 12 geführt, also durch den Frequenzumformer 8 lediglich durchgeleitet. Dies ermöglicht es, die Kombination aus Innenrüttler 1 und Frequenzumformer 8 wenigstens kurzzeitig auch an bestehende Sonderspannungsnetze anzuschließen, ohne dass der Innenrüttler 1 vom Frequenzumformer 8 getrennt werden müsste.A not shown in the figure, another embodiment of the invention makes it possible that the socket 12 can be fed not only with the special voltage, but optionally also with mains voltage. For this purpose, a changeover switch for switching between special and mains voltage is provided on the converter housing 9. While the current for generating the special voltage is passed through the converter circuit, it is performed after actuation of the switch directly from the supply line 10 to the socket 12, that is only passed through the frequency converter 8. This makes it possible, at least for a short time, to connect the combination of internal vibrator 1 and frequency converter 8 to existing special voltage networks without the internal vibrator 1 having to be disconnected from the frequency converter 8.

Claims (9)

  1. Frequency converter (8) for an internal vibrator (1) having
    - a mobile converter housing (9);
    - a converter circuit disposed in the converter housing (9) to convert an electric mains voltage into a special voltage;
    - a supply line (10) which is mechanically connected to the converter housing (9), electrically coupled to the converter circuit and has a plug part (11) provided on its end remote from the converter housing (9); and having
    - a plug socket (12) supplied with the special voltage by the converter circuit, characterised in that a mains plug (7) of the internal vibrator (1) can be inserted at the plug socket (12).
  2. Frequency converter as claimed in claim 1, characterised in that the plug socket (12) is integrated into the converter housing (9).
  3. Frequency converter as claimed in claim 1, characterised in that the plug socket (12) is connected to the converter housing (9) via a further supply line.
  4. Frequency converter as claimed in any one of claims 1 to 3, characterised in that the plug socket (12) can be supplied with mains voltage as an alternative to the special voltage and that a change-over switch is provided to change over between the special voltage and the mains voltage.
  5. Frequency converter as claimed in any one of claims 1 to 4, characterised in that in the region of the plug socket (12) a securing device is provided with which the plug part (7) of the internal vibrator (1) is held in the plug socket (12).
  6. Frequency converter as claimed in any one of claims 1 to 5, characterised in that the converter housing (9) has an elongate external shape with minimised transverse dimensions.
  7. Frequency converter as claimed in any one of claims 1 to 6, characterised in that the converter housing (9) has a smooth outer skin and permits mobile handling of the frequency converter (8).
  8. Frequency converter as claimed in any one of claims 5 to 7, characterised in that the converter housing (9) can be pulled over the ground by the internal vibrator (1).
  9. Frequency converter as claimed in any one of claims 1 to 8, characterised in that the converter circuit is an electronic converter circuit.
EP01945340A 2000-07-07 2001-07-05 Frequency converter for an immersion vibrator Expired - Lifetime EP1299605B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10033137A DE10033137A1 (en) 2000-07-07 2000-07-07 Frequency converter for an internal vibrator
DE10033137 2000-07-07
PCT/EP2001/007721 WO2002004764A2 (en) 2000-07-07 2001-07-05 Frequency converter for an immersion vibrator

Publications (2)

Publication Number Publication Date
EP1299605A2 EP1299605A2 (en) 2003-04-09
EP1299605B1 true EP1299605B1 (en) 2007-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01945340A Expired - Lifetime EP1299605B1 (en) 2000-07-07 2001-07-05 Frequency converter for an immersion vibrator

Country Status (6)

Country Link
US (2) US7498691B2 (en)
EP (1) EP1299605B1 (en)
JP (1) JP2004502887A (en)
DE (2) DE10033137A1 (en)
ES (1) ES2290147T3 (en)
WO (1) WO2002004764A2 (en)

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DE19913077C2 (en) * 1999-03-23 2003-06-12 Wacker Construction Equipment Internal vibrator with measuring system
DE10033137A1 (en) * 2000-07-07 2002-01-31 Wacker Werke Kg Frequency converter for an internal vibrator
DE10101277B4 (en) * 2001-01-12 2006-11-02 Wacker Construction Equipment Ag High-frequency internal vibrator with cooled electronic frequency converter
EP1316655A1 (en) * 2001-11-28 2003-06-04 Industrias Techno-Flex, S.A. Vibrating device for concrete compacting
ES2243124B1 (en) * 2003-12-30 2006-07-16 Hervisa, S.A. VIBRATOR FOR CONCRETE COMPACTING.
CN110242052A (en) * 2019-05-30 2019-09-17 诸暨市辉煌五金有限公司 Split type vibratory concrete device

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US7385315B2 (en) 2008-06-10
WO2002004764A2 (en) 2002-01-17
US20030012041A1 (en) 2003-01-16
US7498691B2 (en) 2009-03-03
DE50112968D1 (en) 2007-10-18
DE10033137A1 (en) 2002-01-31
JP2004502887A (en) 2004-01-29
EP1299605A2 (en) 2003-04-09
US20060158038A1 (en) 2006-07-20
ES2290147T3 (en) 2008-02-16
WO2002004764A3 (en) 2002-06-20

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